What vertebrates have colorless blood? Detailed answer

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What vertebrates have colorless blood? Detailed answer

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What vertebrates have colorless blood?

Ice fish, or whitefish, live in the waters of Antarctica. This is the only vertebrate species that does not have red blood cells and hemoglobin in its blood - therefore, the blood of ice fish is colorless. Their metabolism is based only on oxygen dissolved directly in the blood. This structure of the circulatory system allowed white bloods to exist in a habitat with a temperature below the freezing point of water.

Authors: Jimmy Wales, Larry Sanger

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Who created the first globe and when?

The German geographer and traveler Martin Boeheim (1459-1507) became famous for the creation of the first globe. In 1492, he made the globe "Earth's apple" with a diameter of 54 centimeters, which displayed the most advanced geographical representations of that time (on the eve of the discovery of the New World) about the surface of the Earth.

There is no land mass between Europe and the Asian islands on the Bøheim globe, but many legendary islands appear. Among them, the island of Brazil, which attracted the attention of Bristol merchants from the end of the 578th century, the island of St. Brandan, allegedly discovered by this saint back in 1721 (this island was unsuccessfully searched until 734), the island of Antilia, which was allegedly reached in 1414 by the archbishop of the city of Oporto (according to another version, it was discovered in XNUMX).

The globe of Martin Boeheim, which is of the greatest historical and geographical value, is on display at the German National Museum in Nuremberg.

Test your knowledge! Did you know...

▪ Do animals see colors?

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